World Book Trivia Quiz For Kids--3/4--planets

1. Which of these is not a planet?

Mercury

Neptune

Pluto

Earth

Pluto was called a planet until 2006. The discovery of several other objects about the same size as Pluto led scientists to create a new category called dwarf planets.

Explanation

Pluto was called a planet until 2006. The discovery of several other objects about the same size as Pluto led scientists to create a new category called dwarf planets.

2. All of the planets put together are as big as the sun.

True

False

The sun contains about 99.8% of all the matter in the solar system.

Explanation

The sun contains about 99.8% of all the matter in the solar system.

3. Mars has how many moons?

1

2

3

4

Mars has two moons, Deimos and Phobos.

Explanation

Mars has two moons, Deimos and Phobos.

4. How many planets in the solar system have a moon?

1

2

4

6

5. What is the third largest planet?

Jupiter

Venus

Uranus

Earth

Uranus is smaller than both Jupiter and Saturn, but a tiny bit larger than Neptune.

Explanation

Uranus is smaller than both Jupiter and Saturn, but a tiny bit larger than Neptune.

6. Where can you find the fastest winds in the solar system?

Neptune

Earth

Venus

Jupiter

Winds blow on Neptune at speeds up to about 900 miles (1,450 kilometers) per hour. Unlike the winds of Jupiter, Saturn, and Uranus, Neptune’s winds tend to blow in the opposite direction of the planet’s rotation.

Explanation

Winds blow on Neptune at speeds up to about 900 miles (1,450 kilometers) per hour. Unlike the winds of Jupiter, Saturn, and Uranus, Neptune’s winds tend to blow in the opposite direction of the planet’s rotation.